I ordinarily use JVC Taiyo Yudens for my duplication, but figured I would give these a shot given their good reviews and the slightly lower price.

That'll teach me to change things up. Perhaps about a quarter of the way through one spindle (I had purchased two), I had a 20% fail rate. Never ever experienced anything like that with the TYs. Maybe I got a bad batch, maybe they just don't like my hardware, not sure. But they're going back to SMS regardless.